Add PagerDuty columns to Incident Management

Add PagerDuty integration columns to
`project_incident_management_settings`

db/migrate/20200708080631_add_pager_duty_integration_columns_to_project_incident_management_settings.rb

+# frozen_string_literal: true
+
+class AddPagerDutyIntegrationColumnsToProjectIncidentManagementSettings < ActiveRecord::Migration[6.0]
+  DOWNTIME = false
+
+  # limit constraints added in a separate migration:
+  # 20200710130234_add_limit_constraints_to_project_incident_management_settings_token.rb
+  def change
+    add_column :project_incident_management_settings, :pagerduty_active, :boolean, null: false, default: false
+    add_column :project_incident_management_settings, :encrypted_pagerduty_token, :binary, null: true
+    add_column :project_incident_management_settings, :encrypted_pagerduty_token_iv, :binary, null: true
+  end
+end

db/migrate/20200710130234_add_limit_constraints_to_project_incident_management_settings_token.rb

+# frozen_string_literal: true
+
+class AddLimitConstraintsToProjectIncidentManagementSettingsToken < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+  DOWNTIME = false
+
+  disable_ddl_transaction!
+
+  def up
+    add_check_constraint :project_incident_management_settings, 'octet_length(encrypted_pagerduty_token) <= 255', 'pagerduty_token_length_constraint'
+    add_check_constraint :project_incident_management_settings, 'octet_length(encrypted_pagerduty_token_iv) <= 12', 'pagerduty_token_iv_length_constraint'
+  end
+
+  def down
+    remove_check_constraint :project_incident_management_settings, 'pagerduty_token_length_constraint'
+    remove_check_constraint :project_incident_management_settings, 'pagerduty_token_iv_length_constraint'
+  end
+end

db/structure.sql

@@ -14111,7 +14111,12 @@ CREATE TABLE public.project_incident_management_settings (
     project_id integer NOT NULL,
     create_issue boolean DEFAULT false NOT NULL,
     send_email boolean DEFAULT false NOT NULL,
-    issue_template_key text
+    issue_template_key text,
+    pagerduty_active boolean DEFAULT false NOT NULL,
+    encrypted_pagerduty_token bytea,
+    encrypted_pagerduty_token_iv bytea,
+    CONSTRAINT pagerduty_token_iv_length_constraint CHECK ((octet_length(encrypted_pagerduty_token_iv) <= 12)),
+    CONSTRAINT pagerduty_token_length_constraint CHECK ((octet_length(encrypted_pagerduty_token) <= 255))
 );
 
 CREATE SEQUENCE public.project_incident_management_settings_project_id_seq
@@ -23645,6 +23650,8 @@ COPY "schema_migrations" (version) FROM STDIN;
 20200707071941
 20200707094341
 20200707095849
+20200708080631
 20200710102846
+20200710130234
 \.